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zonefs changes for 5.10

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This pull request introduces the following changes to zonefs:
 
 * Add the "explicit-open" mount option to automatically issue a
   REQ_OP_ZONE_OPEN command to the device whenever a sequential zone file
   is open for writing for the first time. This avoids "insufficient zone
   resources" errors for write operations on some drives with limited
   zone resources or on ZNS drives with a limited number of active zones.
   From Johannes.
 
 Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
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Merge tag 'zonefs-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs

Pull zonefs updates from Damien Le Moal:
 "Add an 'explicit-open' mount option to automatically issue a
  REQ_OP_ZONE_OPEN command to the device whenever a sequential zone file
  is open for writing for the first time.

  This avoids 'insufficient zone resources' errors for write operations
  on some drives with limited zone resources or on ZNS drives with a
  limited number of active zones. From Johannes"

* tag 'zonefs-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs:
  zonefs: document the explicit-open mount option
  zonefs: open/close zone on file open/close
  zonefs: provide no-lock zonefs_io_error variant
  zonefs: introduce helper for zone management
This commit is contained in:
Linus Torvalds 2020-10-19 13:52:01 -07:00
commit 922a763ae1
3 changed files with 233 additions and 13 deletions
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